Card game

#include <algorithm>
#include <cstddef>
#include <cstdint>
#include <functional>
#include <iostream>
#include <vector>

using std::cin;
using std::cout;
using std::endl;
using std::greater;
using std::ios;
using std::sort;
using std::vector;


int main() {
    ios::sync_with_stdio(false);

    size_t n;
    cin >> n;

    vector<uint32_t> cards(n);

    for (size_t i = 0; i < n; i++) {
        cin >> cards[i];
    }

    sort(cards.begin(), cards.end(), greater<int>());

    uint64_t result = 0;
    for (size_t i = 0; i + 2 < n; i += 3) {
        result += cards[i + 1] + cards[i + 2];
    }

    cout << result << endl;

    return 0;
}

Test 1

Verdict: UNKNOWN

Test 2

Verdict: UNKNOWN

Test 3

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Test 4

Verdict: UNKNOWN

Test 5

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Test 6

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Test 7

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Test 8

Verdict: UNKNOWN

Test 9

Verdict: UNKNOWN

Test 10

Verdict: UNKNOWN

Test 11

Verdict: UNKNOWN

Test 12

Verdict: UNKNOWN

Test 13

Verdict: UNKNOWN

Test 14

Verdict: UNKNOWN

Test 15

Verdict: UNKNOWN

Test 16

Verdict: UNKNOWN

Test 17

Verdict: UNKNOWN

Test 18

Verdict: UNKNOWN